Lester the lens Scott has was made for the movie industry in the early 70's. When new cost over 20K US. They are very rare. They are derived from the FD version. The trouble with FD versions you can't get infinity focus on a Canon EOS camera without an adapter with a lens which generally ruins the quality.
How these were produced (industry rumour) was by selecting the best FD lenses and converting them to the Arriflex mount. And then sell them for a fortune to the movie industry.
They are almost as good as a late model 300mm F2.8L, but they were the forerunner to these lenses.
You can now buy a modified Canon 300mm F2.8L for your movie camera for about 12k to 15k US! That's if you are a Movie Mogul!
Here are a few places with info on these older lenses.
http://digitalcontentproducer.com/ma...ion/index.html
http://www.mir.com.my/rb/photography...es/300mmfd.htm
To get back to the thread, why Scott produces such good images is only partly due to the lens. Every thing else has got to be correct as well. To name a few, guiding,exposure,processing and so forth. This only comes with experience, another word for many failures, but learning from them!
Bert